FIELD: chemical industry. SUBSTANCE: process of recovery acid solutions uses organosilicon nitrogen- and sulfur containing complexing sorbent with elementary unit of structure: O15SiCH2CH2CH2NHC(S)CH3. Sorption activity of Hg(II) is attained in HCl,HNO3,H2SO4 solutions having concentration of 1 mole/1 per 128, 179 and 400 mg/g, respectively. EFFECT: more efficient recovery method. 4 tbl
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